# -*- coding: utf-8 -*-

# @Author: Chen Hua
# @Date  : 2019-06-28
# @Desc  : 


class Settings():

    def __init__(self):
        self.screen_width = 900
        self.screen_height = 600
        self.bg_color = (230, 230, 230)
        #飞船设置
        self.ship_speed_factor = 0.8
        self.ship_limit = 3
        #子弹设置
        self.bullet_speed_factor = 0.6
        self.bullet_width = 10
        self.bullet_height = 5
        self.bullet_color = 60, 60, 60
        #未消失的子弹数目为3个
        self.bullets_allowed = 6
        #外星人设置
        self.alien_speed_factor = 0.3
        self.fleet_drop_speed = 3
        # fleet_direction 为1表示向右移动，为-1表示向左移动
        self.fleet_direction = 1
        #以什么样的速度加快游戏节奏
        self.speedup_scale = 1.1
        self.score_scale = 1.5
        self.initialize_dynamic_settings()

    def initialize_dynamic_settings(self):
        self.ship_speed_factor = 1.5
        self.bullet_speed_factor = 3
        self.alien_speed_factor = 1
        self.fleet_direction = 1
        self.alien_points = 50

    def increase_speed(self):
        self.ship_speed_factor *= self.speedup_scale
        self.bullet_speed_factor *= self.speedup_scale
        self.alien_speed_factor *= self.speedup_scale
        self.alien_points = int(self.alien_points * self.score_scale)


